Laplace Transform of t ^{2}sin(2t)? ...?

Answers

Answer 1
By laplace transform definition of { t^n * f(t) } 

(-1)^n * ( d^n/ds^n ) F(s) 

t^2*sin(2t) <==== let's apply it 

(-1)^2 * ( d^2/ds^2 ) ( 2 / (s^2 + 2^2) ) 

1 * ( d^2/ds^2 ) ( 2 / (s^2 + 4) ) <===== let's find the first and second derivative : 

( (s^2 + 2^2) * 0 - 2 * (2s) / (s^2 + 4)^2 ) 

( - 4s) / (s^2 + 4)^2 ) <==== let's find the second derivative 

( (s^2 + 4)^2 * -4 - - 4s * 2 * (s^2 + 4) * 2s ) / (s^2 + 4)^4 ) 

( -4(s^2 + 4)^2 + 16s^2 * (s^2 + 4) ) / (s^2 + 4)^4 ) 

( -4(s^2 + 4) + 16s^2 ) / (s^2 + 4)^3 ) 

( -4s^2 - 16 + 16s^2 ) / (s^2 + 4)^3 ) 

( 12s^2 - 16 ) / (s^2 + 4)^3 )

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Answer 2

Laplace transformation is the transformation in the integral form which convert a function of a real variable to a complex variable.

The Laplace transform of the given function is,

[tex]L[t^{2}\sin(2t)]=\left [\dfrac{4(3s^2-4)}{(s^2+4)^2} \right ]\\[/tex]

What is Laplace transformation?

Laplace transformation is the transformation in the integral form which convert a function of a real variable to a complex variable.

Given information-

The function given in the problem is,

[tex]t^{2}\sin(2t)[/tex]

By the Laplace transform we can write that,

[tex]L[t^{2}\sin(2t)]=(-1)^2\dfrac{d^2}{ds^2}L(\sin 2t)\\L[t^{2}\sin(2t)]=\dfrac{d}{ds}\;\dfrac{d}{ds}\dfrac{2}{s^2+4}\\L[t^{2}\sin(2t)]=\dfrac{d}{ds}\left [\dfrac{-4s}{(s^2+4)^2} \right ]\\[/tex]

Solve further to get the final result,

[tex]L[t^{2}\sin(2t)]=\left [\dfrac{(s^2+4)^2(-4)+4s(s^2+4)\times2s}{(s^2+4)^2} \right ]\\[/tex]

Simplify the above equation as,

[tex]L[t^{2}\sin(2t)]=\left [\dfrac{4(3s^2-4)}{(s^2+4)^2} \right ]\\[/tex]

Hence, the Laplace transform of the given function is,

[tex]L[t^{2}\sin(2t)]=\left [\dfrac{4(3s^2-4)}{(s^2+4)^2} \right ]\\[/tex]

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Related Questions

help?

I don't want the answer, merely step by step instructions on how to solve it! Thanks x

Answers

It is simply asking you which  one increased the most from its last interval.

Answer : 4 | 2006 - 2012

From 1898 - 1971 it increased by 5

1971 - 1985 increased by 8

1985 - 2006 it increases by 10

2006 - 2012 it increased by 11 ( this is the answer because it increased the                                                         most  compared to the others)

What is the total interest on a ten-year. 6.1% loan with a principal of $32,000?

Answers

Final answer:

The total interest on a ten-year, 6.1% loan with a principal of $32,000 is $19,520.

Explanation:

To find the total interest, we need to use the formula:

Interest = Principal × Rate × Time

Given that the principal is $32,000, the interest rate is 6.1%, and the time is 10 years, we can substitute these values into the formula to calculate the total interest:

Principal: $32,000

Rate: 6.1%

Time: 10 years

Interest = $32,000 × 0.061 × 10 = $19,520

Therefore, the total interest on a ten-year, 6.1% loan with a principal of $32,000 is $19,520.

Rasheed needs to save $231. To earn money,he plans to wash cars and charge $12 per car.Write two estimates Rasheed could use to determine how many cars he needs to wash

Answers

231 divided by 12=19.25 - since 12 is the price he decided to charge you would dived the total amount he wants to earn (231) to get the amount of cars needed.
Or
231 divided by N- If he wants to charge more in order to need less cars, or to charge less and need more cars.

If adams plain travels at a speed of 375mph in 6hours ,how far did the plane travel

Answers

So if the plane travels at 375 miles per hour, then to get to 6 hours you multiply 375 by 6 which is 2250 miles. Hope this helps!
375 x 6 = 2250.
the plane traveled 2250 miles

hope this helps you

slope -2 and passes through (1, 1)

Answers

In slope intercept form it's y=-2x+1

Olivia must earn 475 points out of 550 to receive a b in math. so far she had earned 240 test points 85 quiz point and 40 homework points. how many points p must she score on her final exam to earn at least a b in math

Answers

Solution: 240 + 85 + 40 = 365
475 - 365 = 110

Answer: Olivia needs 110 points on her final exam in order to earn at least a B in Math.

Answer: Olivia needs 110 points on her final exam in order to earn at least a B in Math.

What is addition?

Addition is a way of combining things and counting them together as one large group. ... Addition in math is a process of combining two or more numbers.

Here, given that,

Olivia must earn 475 points out of 550 to receive a b in math.

so far she had earned 240 test points

85 quiz point

and 40 homework points.

Solution: 240 + 85 + 40 = 365

Now, we get,

475 - 365 = 110

Hence, Answer: Olivia needs 110 points on her final exam in order to earn at least a B in Math.

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You have $6,500 to deposit. If you deposit the money in a savings account at your local bank, you will earn 1.45% annual interest and will be able to make ATM withdrawals at your bank's ATMs. If you deposit the money in an online savings account, you will earn 2.25% interest, but you will be charged $4 every time you make an ATM withdrawal. Assuming that your ATM withdrawals do not reduce the amount of interest you earn, how many ATM withdrawals must you make in a year for the local savings account to be a better deal than the online savings account?
a.
5
b.
12
c.
14
d.
10

Answers

The amount earned from the local account must be greater than that of the online account.
Amount from local account = 6,500(1.0145)ⁿ
Amount from online account = 6,500(1.0225)ⁿ - 4x
Where n is the number of years and x is the number of ATM withdrawals.

6,500(1.0145)ⁿ > 6,500(1.0225)ⁿ - 4x
4x > 6,500[(1.0225)ⁿ - (1.0145)ⁿ]; n = 1
x > 13
The number of withdrawals must exceed 13.

The answer is C.

Answer:

C. 14

Step-by-step explanation:

I just answered it correct

for the sequencing of 3/16, 4/25, 5/36, 6/49

would it be (n+1)/(n^2)? ...?

Answers

The solution to the problem is as follows:


 increase the top by one each time. 

the bottom is incriments of square's 

ex: 4 squared is 16, 5 squared is 25. 

The next 2 numbers are: 7/64 and 8/81


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how to solve sin(pi/2) without a calculator ...?

Answers

By the definition of the functions of trigonometry, the sine of  is equal to the -coordinate of the point with polar coordinates , giving . Similarly, , since it is the -coordinate of this point. Filling out the rest trigonometric functions then gives


In a sample of students, 12 out of 24 students in a class wanted a sandwich for lunch. using the data from the sample, predict how many students would want sandwiches for lunch in a school of 400

Answers

200 students would want sandwiches for lunch in a school of 400 because half of 400 is 200.

Out of 400 students in school, 200 students would want sandwich in school.

The question is asking to predict how many students would want sandwiches for lunch in a school of 400 based on a sample of 24 students where 12 wanted a sandwich.

Calculate the proportion of students in the sample wanting a sandwich: 12/24 = 0.5

Apply the proportion to the larger school: 0.5 x 400 = 200 students.

Solve for the equation. u + 3.5 = 5

Answers

Subtract 3.5 from each side of the equal sign. u = 1.5

Find dy/dx and d2y/dx2. x = et, y = te−t

Answers

Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.
Below is the solution:

x = e^t 
y = te^-t 

dy/dx = y'/x' 
= (1-t)e^-t/e^t 
= (1-t)e^-2t 

d^2/dx^2 = (x'y"-x"y')/x'^3 
= ((e^t)(t-2)e^-t - (e^t)(1-t)e^-t)/e^3t 
= (2t-3)e^-3t 

or, do it directly 

x = e^t, so 
y = lnx/x 

y' = (1-lnx)/x^2 = (1-t)e^-2t 
y" = (2lnx-3)/x^3 = (2t-3)e^-3t
Final answer:

The question is about finding the first and second derivatives of y with respect to x. The first derivative dy/dx is found to be (1+t)e^-2t, and the second derivative d2y/dx2 is found to be -2e^-2t.

Explanation:

The derivatives are found by differentiating each function with respect to t first, using the product and chain rules, respectively: the derivatives dy/dt and dx/dt are dy/dt = e^-t - te^-t and dx/dt = e^t. Then, dy/dx can be found as (dy/dt)/(dx/dt), and the second derivative d2y/dx2 can be obtained by differentiating dy/dx with respect to x, which will utilize the quotient rule. Specifically, dy/dx = (e^-t(1+t))/(e^t) which simplifies to (1+t)e^-2t, and after a relatively complex differentiation for d2y/dx2, we get -2e^-2t.

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Ted and Robin each gave a basket of green apples to their friend Lily. Ted’s basket contains 5 apples, each weighing ounces. Robin’s basket contains 6 apples, each weighing ounces. Whose basket is heavier and by how much?

Answers

Final answer:

Robin's basket is heavier than Ted's basket by 2 ounces.

Explanation:

To determine whose basket is heavier, we need to find the total weight of each basket.

Ted's basket contains 5 apples, each weighing 8 ounces. Therefore, the total weight of Ted's basket is 5 * 8 = 40 ounces.

Robin's basket contains 6 apples, each weighing 7 ounces. Therefore, the total weight of Robin's basket is 6 * 7 = 42 ounces.

Since Robin's basket weighs 42 ounces and Ted's basket weighs 40 ounces, Robin's basket is heavier by 2 ounces.

lim x->1 (x^n-1)/(x^m-1) =?

Answers

please read the attached file

is 48/72 and 6/9 Proportional or Nonproportional

Answers

I hope this helps you

The fractions (48/72) and (6/9) are proportional as, (8/8)(6/9) is equal to (48/72).

What are ratio and proportion?

In its most basic form, a ratio is a comparison between two comparable quantities.

There are two types of proportions One is the direct proportion, whereby increasing one number by a constant k also increases the other quantity by the same constant k, and vice versa.

If one quantity is increased by a constant k, the other will decrease by the same constant k in the case of inverse proportion, and vice versa.

Given, A fraction 48/72.

Now, If we simplify the fraction by factoring out some common terms we'll have,

24/36.

= 12/18.

= 6/9.

So, They are proportional.

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1, 6, 11, 16, 21, . . .
Use inductive reasoning to predict the next term in the sequence.

A.26B.31C.36D.37 ?

Answers

The answer would be A. because you're just adding 5 each time. 

Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.

f of x equals eight divided by x and g of x equals eight divided by x

Answers

answer
f(x)=8/x, g(x)=8/x
f(g(x)) = f(8/x)=8/8/x=x,
g(f(x)) =g(8/x) =8/8/x=x,
so f(g(x)) = g(f(x)) = x. if f of x equals eight divided by x and g of x equals eight divided by x

Select the inequality that models the problem.

The length of a rectangle is twice its width. If the perimeter of the rectangle is less than 50 meters, what is the greatest width of the rectangle?


2*2w + 2w < 50

2 + 2w < 50

2w*w < 50

2w < 50 ...?

Answers

Here is the answer for the given problem above.
We know that the formula for getting the perimeter is P =2W +2L.
Now, it is defined that length of a rectangle is twice its width so this gives us L=2w. And the perimeters is less than 50 meters so it is P < 50. 
So the answer for this would be 2(2w) + 2w <50. It would be the first option. Hope this answer helps.

Carol sells candles and Yankee Candle. She earns $8.50 per hour plus 6% commission on sales. Last week Carol worked 40 hours. What was Carol’s weekly gross salary if her total sales were $250? *

$590.51
$352.16
$355.00
$340.00

Answers

352.16 this should indefinite like this should be the ace in the game.

Answer:$352.16

Im in a rush so cant add explaination

What is the equation of the line –3x–2y=30 in slope-intercept form?



Enter your answer in the box.

Answers

The answer to this is y = -(3/2)x -15

The slope intercept form of the given equation of a line is y= -3/2 x -15.

The given equation of the line is -3x-2y=30.

What is the slope intercept form?

The slope intercept form of a straight line is one of the most common forms used to represent the equation of a line. The slope intercept formula can be used to find the equation of a line when given the slope of the straight line and the y-intercept.

The standard form of the slope intercept form is y=mx+c.

Now,

-3x-2y=30

⇒ -2y=3x+30

⇒ y= -3/2 x -15

Therefore, the slope intercept form of the given equation of a line is y= -3/2 x -15.

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A box of ground nutmeg weighs 1 1/3 ounce. If there are 20 teaspoons of nutmeg in the box, how much does one teaspoon of nutmeg weigh?
1/15 ounce
1/20 ounce
1/60 ounce
4/3 ounce

Answers

We can find out what the answer is by dividing the weight in ounces with the number of teaspoons.

1 1/3 = 4/3
(4/3)/20 = 4/60
4/60 = 1/15

The answer is 1/15 ounce

we know that

a) A box of ground nutmeg weighs [tex]1 1/3[/tex] ounces

b) There are [tex]20[/tex] teaspoons of nutmeg in the box

Step 1

Convert mixed number to an improper fraction

[tex]1\frac{1}{3} \ ounces= \frac{1*3+1}{3}= \frac{4}{3}\ ounces[/tex]

Step 2

By proportion

Find the weight of one teaspoon

[tex]\frac{(4/3)}{20} \frac{ounces}{teaspoons} =\frac{x}{1} \frac{ounces}{teaspoon} \\ \\x= \frac{4}{20*3}\\ \\x= \frac{4}{60}\ ounces\\\\x=\frac{1}{15}\ ounces[/tex]

therefore

the answer is the option

[tex]\frac{1}{15}\ ounces[/tex]

How many pints are in 7.5 gallons?
a. 120 pt
b. 90 pt
c. 60 pt
d. 30 pt

Answers

How many pints are in 7.5 gallons?
60 pints
There are 60 pints in 7.5 gallons!

Put these numbers in order from least to greatest 11, 7, 8, 3, 6, three, 16, 10, 16

Answers

3, three, 6, 7, 8,10,16,16
3 , 3 , 6 , 7 , 8 , 10 , 11 , 16 , 16

hope this helps you

true or false Volume can be measured in liters or cubic meters.

Answers

The correct answer of the given statement above would be TRUE. It is true that volume can be measured in liters or cubic meters. Liters and cubic meters are units used to measure volume usually related to liquid volume. Hope this answers your question. 

Hector wrote the following proof for his geometry homework for the given problem:

Statements Reasons
segment LN is congruent to segment NP Given
∠1 ≅ ∠2 Given
∠N ≅ ∠N Reflexive Property
ΔLNO ≅ ΔPNM Angle-Angle-Side Postulate
∠NLO ≅ ∠NPM


Which of the following completes Hector's proof?

Angle Addition Postulate
Converse of Corresponding Angles Postulate
Corresponding Parts of Congruent Triangles Are Congruent
Triangle Proportionality Theorem

Answers

Answer:

∠ NLO ≅ ∠ NPM Corresponding Parts of Congruent Triangles Are Congruent

Step-by-step explanation:

It's on my chart on the test this is 100% right

Final answer:

Hector used the Angle-Angle-Side Postulate to show congruency between two triangles. Therefore, the corresponding angles are congruent with the CPCTC principle. Thus, option 3 is correct.

Explanation:

Hector claims that ΔLNO ≅ ΔPNM is based on the Angle-Angle-Side Postulate.

Since the triangles are congruent, their corresponding parts must also be congruent.

Therefore, the statement that ∠NLO ≅ ∠NPM is supported by the principle that Corresponding Parts of Congruent Triangles Are Congruent (CPCTC).

Heather writes the equations below to represent two lines drawn on the coordinate plane.

–6x + 18y = 0
4x – 12y = 20
After applying the linear combination method, Heather arrived at the equation 0 = 60. What conclusion can be drawn about the system of equations?

The equation has no solution; therefore, the system of equations has no solution.
The equation has a solution at (0, 60); therefore, the system of equations has a solution at (0, 60).
The equation has infinite solutions; therefore, the system of equation as infinite solutions.
The equation has a solution at (0, 0); therefore, the system of equations has a solution at (0, 0).

Answers

According to the represented datum, the correct answer is : equation has no solution; therefore, the system of equations has no solution because it is imposible  when girl should rich  0 = 60. 
I am pretty sure it helps! Do hope you will agree with me.

Answer:

its A if you are taking the unit test

Step-by-step explanation:

There are 6 quarters in a jar. Jill adds 2 quarters to the jar every day. Which linear equation represents the total amount of quarters in the jar after x days?

y = 6x + 2
y = 1/6x + 2
y = 2x + 6
6y = 2x

Answers

Y=2x + 6. ( because 2x is 2 quarters a day and you started with 6

Answer: [tex]y = 2x + 6[/tex]

Step-by-step explanation:

Let x represents the number of days .

Given : There are 6 quarters in a jar.

Jill adds 2 quarters to the jar every day.

Then, the number of quarters added in x days = 2x

Now, the total number of quarters in the jar after x days = 2x+6

Hence, the linear equation represents the total amount of quarters in the jar after x days will be:-

[tex]y = 2x + 6[/tex]

Sixteen is 64% of what number?

A.12
B.25
C.32
D.48

Answers

B. 25

16 divided by 0.64 (the percentage as a decimal) = 25
 answer is B.25 because 16 divided by 64% is 25 i hope this helps

Which fraction is equivalent to 2/6?

Answers

1/3 is equivalent to 2/6.

answer that for me please i am very confused

Answers

I think that the answer might be C as well

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